Paper trimmer



July 24, 1934. c. T. RIDGELY 1,967,516

PAPER TRIMMER Filed Sept. 3, 1952 2 Sheets-Sheet 1 July 24, 1934. c LY1,967,516

PAPER TRIMMER Filed Sept. 5, 1952 2 Sheets-Sheet 2 Fla-.4. 5/

Patented July 24, 1934 rArENr OFFICE.

UNITED: T T S 1,967,516 s PAPER TRIMMER a I Charl es rmageiy,Springfield, Ohio ApplicationSeptember 3, 1932, Serial No. 631,634

21Claims. (o1. 164-84) This invention relates to improvements in papertrimmers, and has for its object to provide a hand-operated trimmermounted on'astraight edge or guide, constituting a track for use incutting off unused parts of wall paper, and may be, in fact, used forcutting paper in other places and under other conditions. 7 7

It is particularly the object of this invention to provide, inconnection with a straight edge, a gauge member adapted to move alongthe straight edge for the purpose of cutting paper underneath thestraight edge and along one edge thereof, and be guided on the straightedge with the least possible resistance by means of a spring plate and aremovable. wiper and lubricator thereon.

It is a further object of this invention to provide, in connection witha gauge or traveling member, a cast-in or shrunk pivot pin around whichthere is a seat for supporting a springfor operating a suitable cuttercarried. by the trimmer.

It is alsoan'object of this invention toprovide an adjustable rotarycutter, and a rotary removable and adjustable wiper or cleaner andlubricator for the cutter, and an improved means for limiting theswinging movement of the cutter with relation to the traveling memberunder the action of the lift spring.

It is also an object of this invention to provide, in connection with atrimmer, a guide pin for guiding the movementof the cutter, and aspecially formed spring-operated pin for limiting the swinging movementof the cutter under; the influence of the spring around the pivot pin;

These and other advantages will appear. from the following descriptiontaken in connection with the drawings. 3

Referring to thedrawings: p

Figure 1 is a side elevation ofythe apparatus looking in the directionof the cutting side of the straight edge or track. I

Figure 2 is a top plan view of the apparatus as shown in Figure 1. v

Figure 3 is a side elevation'of, the apparatus and a section of thestraight edge, showing the manner in which the apparatus is supportedlonthe straight edge. In-this figure the cutting blade is elevated'out ofcutting position.

Figure 4 isaview similar to FigureB but with the blade-carrying arm inits extreme" elevated position, due to the removal of the stop pin andthe action of the spring around the pivot pin.

Figure 5 is a section on the line 55 of-Figure 3.

Figure 6 is an enlarged top plan view" of the front end of the trimmer,as shown in Figure 2. Figure 7 is a horizontal section showing themanner in which the cutter case is attached to the gauge member, themanner in.which the guide plate is attached to the gauge member and themanner in which the rotary wiper is supported in connection with thecutter. I

.This apparatus is composed essentially of four parts, ,a straight edge,which affords a trackway upon which there is mounted .agauge member.constituting the second part, a cutter case carried by the gauge member,and a rotating cutter carried by the cutter case. a

When this apparatus'is in place the straight edge 1,-Which may be of anydesired or conven- It ient length, is placed along the paper with theedge abutting the line along which the paper is to be trimmed or out. Onthe straight edge, adjacent one edge thereof, is a groove 2; extendingup the face of the track edge adjacent the groove, and bent over topartly cover the groove is a straight edge track 3 of some suitablematerial, such as brass, or any other like material.- The metal trackwayhas a vertical part and a horizontal part. The horizontal part extendsover the groove in thestraight edge. It is along the), vertical partrofthe track that the cutter blade travels and is guided. Upon thistrackway there. is located, for longitudinal movement thereon, a gaugemember or traveling member 4, which has onone side thereof guides 5 toproper.- ly locate the traveling member with respect to the straightedge; These guides pass along the vertical part of the trackway whenthe" gauge member, moves along the straight edge. a .On the side'of thegauge member opposite the guides 5 are two bosses, a forward, relativelylong boss Sand a rear roundboss 7. In the forward boss is a hole 8, thepurpose of which will be later described, These bosses'support a plate 9which 95. has extending fromone edge thereof a flange 10, I which'isadapted to extend beneath one'edge of the track 3. Thi's'plate issupported on the gauge memberby means oftwo screws 11, extending intothe forward boss 6, and a single screw 11, extend.- ing into the rearboss. Between the plate and .thegauge member and seated in the hole: 8is a relatively heavyspring l2. 'I'hisspring, in cooperation withaspring 14 located-in a hole 13 around the screw 11 in the 10 rearboss;- tends to hold the plate 9 against the 'headsof' the screws 11. Bymeans of these screws the plate 9 may be adjustedwith relation to thetrack 3. The spring 12 is a heavier spring than the spring 14 and islocated opposite the cutter, and

PIX.

sustains a greater pressure during the operation of the trimmer.

Supported on the plate 9, between the two bosses, is a wiper 15. Thiswiper extends laterally and is adapted to engage the under side of thetrackway to remove any grit or foreign material that may accumulatethereon, and to lubricate the track so that the trimmer will easilytravel. Extending upwardly from this wiper or oiler plate is a" bracket16, bymeans ofwhich the. wiper plate is attached to the plate 9 througha screw On the upper side of the plate 15 is a felt 'or fibrous wipingmaterial 18. The plate with thee wiping material thereon may be removedfrom the plate 9 by removing the screw 17. Cooperating with the gaugemember is a cutter case 19, which has cast in one end thereof a pivotpin This pin fits in a hole 21 in one end of the l ge member 4. Aroundthe pivot pin in the cutter case is a spring seat 22, while a similarspring seat is formed in the adjacent part of the gauge member. Thesetwo depressions or seats provide space for a spring 23 coiled around thecast-in pivot pin. The ends 24 ofthis spring 23 areseated in notches inthe walls 25 around the seats or depressions. 1 i

The gauge member is held on the pivot pin 20 by means of a screw 26threaded into the end of the pivot pin. Screw 26 has a knurled head 26aby which it may be easily and quickly removed. On one side ofthecuttercase is aboss 27, which has extending therethrough a hole 28; In thishole is a bushing 29, which has on one end a flange'30 adapted to beengaged by a wrench so that the bushing may be rotated and adjusted inthe boss. This bushing is threaded in the hole 28 so that by'rotatingthe bushing its longitudinal position with relation to the boss may beadjusted and held without the use of a screw such as screw 37.

I Extending through the bushing and supported therein is a spindleorarbor shaft 31, which has on one end a head 32 adapted to fit within thehole 28 and against one end of the bushing 29.

The other end of this spindle or arbor shaft is reduced at 33 to providea shoulder 34 against which the cutter or cutter blade 36 rests by meansofa screw The head 32 has in one edge'a grease slot 32aiadapted to alinewith a slot 29a inthefbushing for holding a grease for lubricating'theshaft. The'bushing 29' may be adjusted byrotation, and after it. hasonce been adjusted it maybe locked in adjusted position by means of ascrew 37. In order to clean'the cutter-and remove paper andpastetherefrom there-is provided a selfadjusting scraper 38, supported in thecutter case and adjacent the cutter by means of ascrew 39 This-scraperis pivotally supported on the end of the: screw-adjacent .the cuttersothat it may adjust itself to=the shape and configuration of the cutterblade at this point. .It will be observed that. this scraper is'locatedadjacent the cutting edge of the blade or cutter. I

Extending laterally from the forward end of the gauge member isan arm40,'which has extend ing rearwardly therefrom-aguide pin 41. This pinand the adjacent. part ofthe gauge member provide a guide for the freeend of the cutter case and prevent lateral movement of the blade withregard to the-gauge member whilethe cutter or trimmer is inoperationoruse. a I I At the forward end of the cutter case is an upper clip orstopmernber 42, anda lower stop .of the flange is a finger seat 51.

member 43, which provide space in which a stop pin 44 works for limitingthe vertical movement of the cutter blade during operation. This stoppin 44 projects through a hole in the forward end of the gauge member,and is formed on and is part of a spring 45, which has adjacent the pina loop 46 by which the pin and spring may be manipulated. The part ofthe spring for supporting and operating thefstop'pinextends alongoneside ofithe gauge member and :is supported thereon by means of a loop4'7 and a screw 48 passing through the loop into some suitable partofthe gauge member. The position of this spring is shownin Figures 4 and6.

The cutter is circular or disc-shaped, and has extendingover it andforming part of the cutter case a flange 49. Formed on the rear part ofthis flange is a thumb seat 50, while onthe front part In operating ormanipulating the trimmer the thumb and one finger are placed in theseseats. I It will beunderstood that I desireto compree hend. within myinvention such modifications as come within the scope of my claims andmy invention. Having thus fully. described my invention, what I claim asnew anddesirezto secure by Letters Patent, is: 1 i a 1. Ina papertrimmer, in combination with a guide, a traveling-member on the guide,.and means to wipe the guide andapply oil thereto; 2. In a papertrimmer, in combination with a track, a cutter member supported onsaidtrack for movement thereon, an attachment on .the cut.- ter memberadapted to hold the cuttermember. on the track, and fibrous material onthe-attachment to Wipe"the"track.'"* I 3. In a paper trimmenin'combination'with a track, 'a cutter member mounted onthe track formovement thereon, :said cutter member having i.-

guide means engaging one side of the track;;an attachment on thebuttermember I engaging the other side of the :track and a removable wiper onthe attachment engaging beneath the :track for cleaning the track. i L

4. In apaper trimmer; in combination Witt-118i track forming a straightedge,'a cutter member mounted on the track fonmovement thereon, meansfor guiding and holding thercutter member onlthe track, said meansincludingan attachment engaging one side of :the track and'extendingbeneath part-thereof; anda removable wiper Jon the attachment.

5."In a paper trimmer, incombin a'tionzwitha track forming a straightedge," a cutter member extending therefro r'n j v J h, 71A lubricatingattachment for paper trimmers consisting of a plate having on one side alayer. of lubricant absorbing material, and a supporting flange,extending from one edge. v V In a'pape'r' trimmer, a cuttermember-having guide means on one side; an'attachment on the other sideforming a cooperating guide means and a lubricant .carrienand a springbetweenthe g cutter member and the attachment to resiliently support theattachment on the cutter member.

9. In a paper trimmer, a cutter member having guide means on one side, aplate mounted on the other side of the cutter member, and a removablecooperating guide and lubricant carrier on said plate.

10. In a paper trimmer, a cutter member having guide means on one side,a plate resiliently mounted on the other side of the cutter member, anda removable cooperating guide and lubricant carrier on said plate.

11. In a paper trimmer, a cutter member having guide means on one side,a plate having a hole in each end, a screw having a head thereonextending through each hole in the plate into the cutter member on theother side of the cutter member, a spring between the cutter member andthe plate, and a cooperating guide and lubricant carrier on said plate.

12. In a paper trimmer, a cutter member having guide means on one side,a plate having a hole in each end, a screw having a head thereonextending through each hole in the plate into the cutter member on theother side of the cutter member, a spring between the cutter member andthe plate, and a detachable cooperating guide and lubricant carrier onsaid plate.

13. In a paper trimmer, a gauge member, a cutter case pivoted to thegauge member, a pair of spaced stops on the cutter case, a pin on thegauge member adapted to extend between the stops, and a spring forholding the pin between the stops to limit the swinging of the cuttercase on its pivot.

14. In a paper trimmer, a gauge member having at one end a cast-in pivotpin, a cutter case on said pin, a spring on the pivot pin with one endengaging the gauge member and its other end engaging the cutter member,a pair of spaced stops on the cutter case, a pin extending through thegauge member adapted to project between the stops to limit the swingingmovement of the cutter case on its pivot, and a spring on the gaugemember tending to hold the pin between the stops.

15. In a paper trimmer, a traveling member, a cutter rotatably mountedon said member, a screw adjustably mounted in said member adjacent oneface of the cutter, and a rotary wiper on the screw adjacent the cutter.

16. In a trimmer, in combination with a track, a gauge member having onone side a guide for engaging one side of the track and on the otherside a yieldingly mounted guide plate adapted to engage the other sideof the track, screws extending through the plate into the gauge memberfor supporting and adjusting the plate, and yielding means between theplate and the gauge member.

17. In a trimmer, in combination with a track, a gauge member having onone side a guide for engaging one side of the track and on the otherside a guide plate adapted to engage the other side of the track,holding members for adjustably holding the plate on the gauge member,and yielding means between the plate and the gauge member, said yieldingmeans consisting of a relatively strong spring between two of theholding members and a weaker spring about another holding member.

18. In a trimmer, a traveling member having a boss with a hole therein,a longitudinally adjustable bushing threaded ,in said hole, and means inthe bushing for supporting a cutter.

19. In a trimmer, a gauge member, a cutter case pivoted at one end toone end of the gauge member, a pair of stops at the other end of thecutter case, a pin in the gauge member for guiding the cutter case, apin adapted to extend through a hole provided therefor in the gauge'member between the stops for limiting the movement of the cutter caseabout its pivot, and a spring for supporting the last-named pin and bywhich it may be withdrawn from the stops.

20. In a paper trimmer, a rotary cutter hav ing thereon a shaft, a headon the shaft, and a bearing for the shaft to support the cutter, saidbearing having a grease slot adjacent the shaft and the head having agrease slot adapted to align with the bearing slot.

21. In a paper trimmer, a traveling member, a cutter rotatably mountedon said member, a screw adjustably mounted on said member adjacent oneface of the cutter, and a self-adjusting scraper on the screw adjacentthe cutter.

CHARLES T. RIDGELY.

